| DYNAMICS OF SANDY DESERTIFICATION AND ITS DRIVING FORCES IN WESTERN JILIN PROVINCE |
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| 作者姓名： | LIFang LIUZhi-ming |
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| 作者单位： | [1]XortheastInstituteofGeographyandAgriculturalEcology,ChineseAcademyofSciences,130012,P.R.China [2]InstituteofAgriculturalDirisionsofJilinProvince,Changchun130012,P.R.China |
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| 基金项目： | The Key Project of Chinese Academy of Sciences(No.KZCX1-SW-19) |
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| 摘 要： | By establishing the interpreting elements, and applying supervised classification, the sandy desertification was interpreted and the desertified land areas of the counties in the western Jilin Province in 1986 and in 2000 were obtained. Taking Tongyu and Qian‘an as examples, the natural driving forces and man-made driving forces were analyzed. The paper comes the conclusions that the material sources and the warming and dry climate are the internal causes of potential land descrtification: the irrational human activities, such as destroying forest and reclaiming the grassland, are the external causes of potential land desertification; while more rational human activities, such as planting trees and restoring grassland can reverse the land desertification. Furthermore, the countermeasures and suggestions for the development of agriculture and animal husbandry in the western Jilin Province are put forward.
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| 关 键 词： | 土壤沙漠化 遥感 动力学 吉林 |
| 收稿时间： | 1 September 2003 |
Dynamics of sandy desertification and its driving forces in western Jilin Province |
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| LIFang LIUZhi-ming.DYNAMICS OF SANDY DESERTIFICATION AND ITS DRIVING FORCES IN WESTERN JILIN PROVINCE[J].Chinese Geographical Science,2004,14(1):57-62. |
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| Authors: | Li Fang He Yan-fen Liu Zhi-ming Zhang Bai |
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| Institution: | (1) Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, 130012 Changchun, P. R. China;(2) Institute of Agricultural Divisions of Jilin Province, 130012 Changchun, P. R. China |
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| Abstract: | By establishing the interpreting elements, and applying supervised classification, the sandy desertific- ation was interpreted and the desertified land areas of the counties in the western Jilin Province in 1986 and in 2000 were obtained. Taking Tongyu and Qian'an as examples, the natural driving forces and man-made driving forces were analyzed. The paper comes the conclusions that the material sources and the warming and dry climate are the internal causes of potential land desertification; the irrational human activities, such as destroying forest and reclaiming the grassland, are the external causes of potential land desertification; while more rational human activities, such as planting trees and restoring grassland can reverse the land desertification. Furthermore, the countermeasures and suggestions for the development of agriculture and animal husbandry in the western Jilin Province are put forward. |
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| Keywords: | sandy desertification remote sensing dynamics driving forces western Jilin Province |
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